if you refer to:
imo it have nothing to do with this topic and could not find “add a prob light”(only that in most cases there is lack of probe)
here we talk about texture filtering, where in yours one as i see it was some wrong texture (or stretched texture) SDK bug. And it was already adressed on Github based on comments.
Split SDK and Engine(do not treat it the same), im not even using SDK myself, but i use JME using Intellij. SDK is nice tool, tho its not essential really.
If you feel its related, then just load .gltf directly without SDK at all.